iosr-JMCE   Volume-15 ~ Issue-3 ~ May-June 2018

Abstract: The aim of this project is to design and build an innovative hubless wheel. The hubless wheel will be self driven by a prime mover like a DC motor. The wheel will have three planetary rollers which will be powered by two DC motors. One roller is on the shaft directly coupled to the two motors and the other two rollers are on two separate shafts connected via belt drives. The driving and driven pulleys have same diameters. The belt is a positive timing belt so that there is no loss of power between motor shaft and the two roller shafts. The motor thus drives all the three rollers and the rollers drive the outer main wheel. The speed, torque while running and discharge time of the battery were first calculated theoretically and then compared with those calculated experimentally.

Keywords: Hubless wheel; centre less wheel; planetary wheels; timing belt drive; electric wheel; Compact wheel.

[1]. Ahmed Mothafar ,"Hubless wheel system for motor vehicles", US Patent 9440488B1, (2016),
[2]. Nguyen Ba Hung, Jaewon Sung , "A simulation and experimental study of operating characteristics of an electric bicycle", Science direct, (2017),232-245
[3]. Sheldon Pinto, E. Raj Kumar ,‟ Design and Analysis of Hubless Personal Vehicle‟, International Conference in advances in design and manufacturing, 2014
[4]. Shigeru Fuji, "Crash Analysis of motorcycle tire", Science direct(Elsevier), Procedia Engineering, 147, (2003), 471-475I.S. Jacobs and C.P. Bean, "Fine particles, thin films and exchange anisotropy," in Magnetism, vol. III, G.T. Rado and H. Suhl, Eds. New York: Academic, 1963, pp. 271-350.
[5]. G.M Rosenblatt, "The controlled motion of a bicycle", (2016), 221-228

Abstract: The incomplete roads, designed only for cars, with limited transportation options make pedestrians, cyclists, and other transport users feel uncomfortable and safe and risk dangerous. Yos Sudarso Road in Mamuju City is a road segment with several activities in various zones, the intensity of activities that occur on the road is very high at certain hours, due to the different activities of the diversity of building functions. The condition of the pedestrian lane on this road does not continue along the road and is not equipped with additional facilities that support the activities and diversity of existing functions. This study aims to identify the condition of pedestrian lanes and analyze the application of pedestrian lanes based on the complete street concept. The type of research used is non-experimental descriptive with the qualitative and quantitative approach, using survey method in the form..............

Keywords: Road Infrastructure, Pedestrian Lane, Complete Street Concept.

[1] North Calorina Department of Transportation, 2012. Complete Streets Planning and Design Guidelines.
[2] The City Of Edmonton, 2013. Complete Streets Guideline. City of Edmonton, Transportation Planning, Canada
[3] Minnasota Complete Street Coalition, ________. Complete Streets Supporting safe and accessible roads for everyone Local toolkit, Minnasota Complete Street Coalition
[4] Syarlianti D., Hanan H., Kusuma E., Hanson. 2016. Best Road-Building Element by Pedestrian Perception. Proceedings of IPLBI Scientific Meeting. IPLBI2016-B-055-058. Retrieved 7November 2017.
[5] Wompere I., B., 2017. Analysis of the Pedestrian System In Jayapura City (A Case Study of Pedestrian Line on the Percetakan Street). International Journal of Computational Engineering Research (IJCER). ISSN (e): 2250 – 3005.Volume07www.ijceronline.com, Last accessed on7thNovember 2017.

Abstract: The flow field around an automobile is very complex, characterized by a high degree of Three dimensionality, flow separation, reattachment and vortex formation. Flow visualization as well as flow simulation are helpful tools during the aerodynamic design of vehicles. The research-undertaken deals with an experimental estimation of CD (drag coefficient) for Hyundai car, (scale 1/30) using the strain gauge method ( FLA-6-11 type, 120Ω, 2.12 gauge factor, half-bridge connection), which was proved to be practical and reasonably accurate. Experiments were run within a subsonic aspiration wind tunnel, covering an air speed up to 33 m/s (i.e., Reynolds number 6.6 x 105). Results for drag coefficient were obtained in the range of 0.96 to 0.39. It was noted that the magnitude of CD decreased from 0.96 at 21.17 m/s to 0.39 at 33.00 m/s (i.e., decrease of drag coefficient by about 60%). Comparison of our results with those given by other authors is satisfactory.

Keywords: Strain gauge, Drag coefficient, Wind tunnel, Aerodynamics of automobile, Static loading, Dynamic loading, Half bridge connection.

[1] Itsuhei Kohri, Teppei Yamanashi & Takayoshi Nasu, "Study on the transient behavior of the vortex structure behind Ahmed body",SAE 2014.
[2] Muzafferuddin Mahmood,"flow visualization in Wind Tunnels", 2011.
[3] M.J.Iremonger,"Basic Stress Analysis", 1984.
[4] DeltaΔLab, " Soufflerie Subsonique a aspiration EA600", France 2014.
[5] Tokyo Sokki Kenkyujo Co. "TML Strain Gauge Test Data", Japan,2015.

Abstract: Today, ultra-high-performance nanostructured concrete is being developed by using high-fineness Portland cement with blast furnace nano-slag and other nanomaterials. The primary aim of this research was to obtain the optimum milling parameters of Portland cement with an average particle size (APS) in the submicron range, by using a planetary ball mill with 5/8" and 1/2" ball diameters. The Portland cement was subjected to different grinding processes, varying the combination of the parameters, until obtaining an APS in the submicron range. The characterization for both the as-received and milled Portland cement was carried out through the following techniques: laser diffraction, XRD, scanning electron microscopy, specific surface area of the cement, and normal cement consistency. The optimum milling parameters were then analyzed and evaluated. The average particle size of the submicron Portland cement obtained through the optimal combination of the parameters was 0.84 μm.

Keywords: Portland cement; average particle size; planetary ball mill; milling parameters.

[1] Perumalsamy Balaguru and Ken Chong, Nanotechnology and concrete: research opportunities. National Science Foundation, USA. Proceedings of ACI Session on "Nanotechnology of Concrete: Recent developments and Future Perspectives" November 7, 2006, Denver, USA pp. 15-28.
[2] Ye Qing, Zhang Zenan, Kong Deyu, Chen Rongshen, Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fume. Construction and Building materials Vol 21, 2007, pp. 539-545. doi:10.1016/j.conbuildmat.2005.09.001.
[3] Xiaoyan Liu, Lei Chen, Aihua Liu, Xinrui Wang, Effect of Nano-CaCO3 on Properties of Cement Paste. International Conference on Future Energy, Environment, and Materials. SciVerse ScienceDirect Energy Procedia Vol 16, 2012, pp. 991-996. doi:10.1016/j.egypro.2012.01.158
[4] L. Senff, D. Hotzab, S. Lucas, V.M. Ferreira, J.A. Labrincha, Effect of nano-SiO2 and nano-TiO2 addition on the rheological behavior and thehardened properties of cement mortars. Materials Science and Engineering A. SciVerse ScienceDirect. Vol 532, 2012, pp. 354-361. doi:10.1016/j.msea.2011.10.102
[5] Dale P. Bentz, Edward J. Garboczi, Claus J. Haecker, Ole M. Jensen, Effects of cement particle size distribution on performance properties of Portland cement-based materials. Cement and Concrete Research. Vol. 29, 1999, pp. 1663-1671.